Krylon Products Group offers Krylon Industrial Quik-Mark inverted marking chalks, designed to last up to 30 days on roads, pavements, gravel, soil, and grass. Typical applications include construction, excavation, ground marking, utilities marking, and surveying. Featuring the patented Spray-Thru cap and non-clogging spray tip, the chalks are available in solvent- or water-based formulas. chalk marking can be removed from hard surfaces with a wire brush and water. Available in 6 APWA colors.